Pitch Count Rest Day Calculator
Enter a pitch count and game date to find out how many rest days are required before the pitcher can take the mound again.
Little League Rest Day Thresholds
| Pitches | Rest Days | Eligible |
|---|---|---|
| 1–20 | None | Next day |
| 21–35 | 1 day | 2 days after game |
| 36–50 | 1 day | 2 days after game |
| 51–65 | 2 days | 3 days after game |
| 66–85 | 3 days | 4 days after game |
| 86+ | 4 days | 5 days after game |
How Pitch Count Rest Days Work
Youth baseball leagues require mandatory rest days after pitching to protect growing arms. The number of rest days depends on how many pitches were thrown in a game. These rules are enforced by leagues like Little League International, USA Baseball (Pitch Smart), and state high school athletic associations (NFHS).
After a pitcher reaches a certain pitch count threshold, they cannot pitch again until the required rest period has elapsed. Rest days are counted as calendar days — the day the game was played does not count as a rest day.
Why Tracking Pitch Counts Matters
Overuse injuries are the leading cause of arm problems in youth pitchers. The American Sports Medicine Institute (ASMI) recommends strict pitch count monitoring as the single most effective way to prevent Tommy John surgery and other elbow/shoulder injuries in young athletes. Accurate tracking across all teams a player pitches for is essential — rest day calculations should consider every game, not just your team's.
Track pitch counts automatically across your whole team
Who's on Second tracks pitch counts, calculates rest days, flags ineligible pitchers in the lineup builder, and even handles players on multiple teams.